Combined lubricating and shock absorbing mechanism for motor vehicles



Q INVENTORY Geog: 7? Jzgqrz'st ATTORNEYJ) May 28, 1935.

COMBINED LUBRICATING AND SHOCK ABSORBI'NG MECHANISM FOR MOTOR VEHICLES 5w n 8 i w I o I Z Z a Z /l7 H W Z m 6 i. fi

UNITED, STATES PATENTOFFICE i 1My-invention relates to improvem SORBING MECHANISM F QHIOLES George'R. Siegrist AppIica'tion-NowmberZ 'T 1 claims entsih ve hicle chassis lubricating mechanism or, more particularly, to vehicle chassis lubricating and shock absorbing mechanism.

It is here shown embodied in a const ruction applied to an automotive vehicle chassis equipped withfluid pressure shock absorbing means adapted" to cushion the shock of road travel of the vehicle and comprising lubricant dispensing apl paratus adapted to deliver lubricant under pressure to a part or parts to be lubricated, which dispensing apparatus is combined and coordinated with suitable fluid pressure shock absorbing means carried by'the chassis to be'operably responsive to the functioning of said shock ab sorbing means, and preferably within a determined range of function and after a predetermined manner as designed.

.An object of myinvention is to provide; in conjunction with suitable fluid pressure shock absorbing mechani sm, fluid pressure lubricating due to its function the chassis produc ing in' resisting" movement of ed by road travel of the vehicle, whereby lubricant is delivered by such operation of the lubricant fluid pressure mechanism to the parts to be lubricated.

In combining theshock absorber. and lubricator mechanism in one device, fluid lubricant is used as the fluid shock absorbing medium.

This fluid shock ab sorbing lubricating medium is fed under pressure toparts to be lubricated which parts are grouped one being provided about the lubricating devices, at each corner of the vehicle.

Meansare provided to prevent exhaustion of the fluid medium by lubrication to suchan extent as to prevent functio device. Long leng ning of the shock absorbing the of tubing are eliminated due to the provision of a combined lubricator. and

shock absorber device at each corner of the vehicle.

An object or my invention is that anew method is evolved of lubricating a vehiclechassis in that a fluid pressure shock absorber of a generally conventional type power to feed lubricant under p parts tobe lubricated.

is employed as the sourceof ressure to the Various other objects, advantages and meritorious features ,0

if my invention will appear more fully from the following description, ap-

pended claims a wherein,--"

nd accompanying drawing,

R. MOTOR VE- Port Huron, Mich.

7, 1929. Serial No. 410,029

Fig, lis a side diagrammatic elevationof an automotive vehicle chassis equipped, with my invention, i

:Fig. 2 is a vertical sectional view through a construction embodying my invention. f

I have illustrated my invention as embodied in a construction attached to a motor vehicle chassis wherein, in Fig. l, achassis of this character is indicated as provided with a frame spring-supported upon axles I2 which carry road Wheels I4 and my improved shock absorberand lubricating device is. shown in assembly at l6. Thecasingis mounted, one at each corner, upon; one of the side frame members of the chassis and an operatingconnectionsuch as a strap 18 ex-c tends from the oper'ablepart of the mechanism to abracket carried bythe axle whereby the shock absorber device functions to cushionith'e shock-of road travel of the vehicle. A conduit 20 leads from the lubricant impelling portion of the general assembly to various parts to be lubricated such as a part 22indicated on the chassis In my invention I employ suitable shock absorbing mechanism of a generally known type and in Fig. 2 aniembodiment'of'my invention of this character illustrated." In this figure there is a casing 24 provided with ears 25 through which 7 fastening bolts may be extended to. secure the casing to the frame in the manner shown in Fig. 1. r This casing is provided with a'cover' plate2 8' secured thereto by screws and the cover plate is fitted with a fillercap 32 through which liquid one end to a piston 'pindil and at the opposite end to an arm 42 which is-mounted upon a shaft 44, the" opposite end of which shaft carriesv an.

arm 46 to which strap i8 is secured; A set 'screw 58 adjustably secures the arm 42 to the shaft 44.

The piston 36 is of hollow form and the head thereof is provided with a passageway 50 extendin'g'therethrough andclosed by a valve' 52,

heldto itsseat by a spring 54. A large spring seats 'inthe bottomof the compression chamber 34 and serves wardly. v

One wall of the piston is provided with a p1u-' ralityof openings 58 and 59 adapted to register with an opening 60 through the compression chamber'wall'. The two openings 58 and 59 are of such size and so spaced apart'that at least a portion of sheer them is at all timesin registry with opening 60.51116 lower op'ening58 is the to 1101s the piston itself uplarger of the two, as clearly indicated in the drawing,-and as it moves out of registry with opening 60 on the downward stroke of the piston 36, the smaller of the two openings 59 begins to come into registry with opening 60. Within opening 60 is seated a valve 82 held to its seat by a spring 64 and itself provided with a plurality of openings 66 whereby escape of lubricant from the compression chamber is permitted;

The valve 62 has a valve stem 63 provided with a reduced end portion iii. The casing 24 is cored out to receive a cylindrical bushing 12 threaded therein as'shown in Fig. 2 and itself -.cored out as at M to receive the enlargedp'ortion 68 of .the

valve stem. This cored out passageway 14 communicates through an inlet 16 with the interior of the casing to receive lubricant therefrom.

The bushing l2 has a coredout portion 18 of reduced diameter which communicates with the cored out passageway 14 and is positioned to receive the reduced end 'm of the valve. stem. The outerend of this passageway 18 is normally closed by a check valve 85 held 'to its seat by a spring 82 man enlarged passagewayfid. The outer end of this passageway. is closed by a nipple 86 threadedtherein and terminating in the conduit 20 heretofore referred to which leads tovarious parts to be lubricated. a V r This bushing construction 12, cored out as described, formsaf pump chamber. The passageway 16, which'leadsto the interior of the casing 24, leads directlyinto a compartment in said casing. formed by a transverse wall 88 which rises to such a height within the casing as to insure that there shall remain in that portion of the casing outside of the wall 'sufficient liquid to permit the functioning of that shock absorbing portion of the mechanism. g v V The reservoir casing is filled with an oil suitablefor lubrication and adapted-to serve as a shock absorbing fluid medium by removal of the filler cap 32, andthis cap should be provided with a vent and might also be provided with a screen;

In the travel of the car over the road, the strap l8 actuates the 'arm dfi'which through the shaft actuates the arm 42; and moves the piston 36 within the cylinder 34. On the rebound from a road shock the strap tightens, pulling the piston 36,.downwardly into thecylinder and the trapped lubricant is permitted to escape through the restricted openings 58 when they are brought to register with the opening 60 through the cylinder wall and the pressure of the. fluid unseats the valve.,62. On minor shocks the valve is moved only slightly but on major shocks it is forced completely from its seat and the reduced end portion 10 enters the passageway 18 which is filled with lubricant at all times and 'unseats the ball valve. 80, forcing the lubricant outwardly.

. It will be seen that this mechanism functions as a pump to eject lubricant under pressure to pass the ball valve 80 and through the conduit.

20 to a part to receive lubricant, but that this response to the pumping mechanism is only within a predetermined range of damping vibration and that outside or rather below this range the shock absorber functions as ashock absorber without causing the pumping mechanism-to respond thereto.- 1 g I r It likewise will appear that due to the provision of the-partition 88a; separate compartment is provided within the reservoir or'casing 24 to which lubricantmay flow from the casing until the lubricant level, comes below the height of'the partition and that as a resultof this if the lubricant level does come below this height, sufficient lubricant will therefore remain to cause the shock absorbing mechanism to function without completely draining the casing through the functioning of the pumping mechanism.

I claim:

1. Vehicle lubricating mechanism comprising, in combination with a liquid pressure shock absorber carried by a vehicle to cushion the shock of road travel thereof, said shock absorber including a casing containing liquid suitable for lubrication, a part to be lubricated communicating with said casingand means within said casing responsiveto fluid pressure created therein by the shock of road travel of the vehicle operable to ,deliverlubricant under pressure therefrom to the part to be libricated.

2. In liquid pressure lubricating and shock absorber mechanism for a vehicle, a liquid reservoir, a liquid compression chamber arranged therein to receive liquid therefrom, means responsive to vehicle travel operable to place the liquid in the'compression chamber underpressure, liquid operated'pumping mechanism-arranged within the liquid reservoir communicating therewith to receive liquid therefrom and responsive to liquid pressure developedin the compression chamber to operatively respond to de liver lubricant under pressure.

3. In liquid pressure lubricating and shock absorber mechanism for a vehicle, a liquid reservoir, a liquid compression chamber arranged therein to receive liquid therefrom; means responsive to vehicletravel operable to place the liquid in the compression chamber under pressure, a second chamber within the reservoir ar ranged to receive liquid therefrom, "liquid operated pumping mechanism' communicating with said second chamber to receive liquid therefrom, said pumping mechanism responsive to. liquid pressure impulses created in said compression chamber to be'ioperated to deliver lubricant underpressure: f

1. In liquid pressure lubricating and shock absorber mechanism for avehicle, aliquid reservoir, a liquid compression chamber arranged therein to receive liquid therefrom, means responsive to vehicle travel operable to place the liquidin the compression chamber under pressure, a second chamber within'the reservoir arranged to receive liquid therefrom so long as the liquid within the reservoir .is maintained at a predetermined level, liquid operated pumping mechanism communicating with said second chamber to receive "liquid therefrom and operably responsive; to liquid pressure created in the compression chamber to be operatively actuated thereby to pump liquid under pressure. 7 5. .In liquid pressure lubricating and shock absorber mechanismfor a vehicle, a liquid reservoir, a liquid compression, chamber arranged therein toreceive liquid therefrom, means responsive to vehicle travel operable to placethe liquid in the compression chamber. under pressure, valve mechanism operable to permit the escape of liquid from said compression chamber under pressure, liquid operated pumping mechanism responsive to the movement of said valve mechanism to be operatively actuated to pump liquid under. pressure to a part to receive-liquid.

6. In liquid pressure lubricating and shock absorber mechanism for avehicle, a liquid reservoir, a liquid compression chamber arranged therein to receive liquid therefrom, means responsive to vehicle travel operable to place the liquid in the compression chamber under pressure, valve mechanism operable to permit the escape of liquid from said compression chamber under pressure, liquid operated pumping mechanism including in part said valve mechanism operable upon the opening of said valve to permit the escape of a predetermined amount of liquid to operatively respond toeject liquid under pressure to a part to receive thesame.

7. In fluid pressure lubricating, and shock absorbing mechanism for a vehicle, a reservoir containing liquid lubricant and having a compression chamber communicating therewith, means arranged within the compression chamber responsive to vehicle travel operable to place the liquid therein under pressure, valve mechanism operable to permit the escape of liquid from said chamber, a part to be lubricated, lubricant pumping mechanism communicating with said part and including in part said valve mechanism and 

